Posted: 09/07/2015 at 06:53
I don't think the insects are anything to worry about.
Have you fed the plants with anything? They look a bit hungry to me and they don't have a lot of compost in that pot. Try giving them some liquid fertiliser - seaweed fertiliser is good - that should perk them up a bit.
Also, have you been over-watering them? Is their compost permanently wet? If so cut down on the watering and let the compost get dry on the surface between waterings. Roots need oxygen as well as water and if the compost is sodden they can't breathe.
Next time, a bigger container for beans